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by huffte
01 Jan 2020, 15:41
Forum: 02-Analytical capabilities
Topic: SeismoSelect vs PEER online scaling program
Replies: 6
Views: 751

Re: SeismoSelect vs PEER online scaling program

Item 1. What I mean is that the NGA-West2 database is the only one available at the NGA-West2 app and the NGA-East is a separate app. Item 2. While a user could manually scale to alternate parameters from PEER results, I don't see an option to scale to PGV, PGD, AI, CAV, at PEER. PEER scaling is bas...
by huffte
01 Jan 2020, 05:02
Forum: 02-Analytical capabilities
Topic: SeismoSelect vs PEER online scaling program
Replies: 6
Views: 751

Re: SeismoSelect vs PEER online scaling program

From my experience in using the PEER online app and SeismoSelect (both excellent tools), SeismoSelect offers the following features which do not appear to be available in the PEER app: 1. multiple databases in the same application 2. scaling to intensity measures other than PSA (PGD, PGV, AI, CAV, a...
by huffte
27 Dec 2019, 17:20
Forum: 02-Analytical capabilities
Topic: Ground Motion Data Conversion
Replies: 5
Views: 576

Re: Ground Motion Data Conversion

It appears that the data are harmonic loadings of varying frequency. Since the amplitudes are in mm, you would need to create acceleration histories by first calculating Asin(wt), where A is the amplitude and w is the frequency in radians per second (obtained by multiplying the given frequency in Hz...
by huffte
27 Dec 2019, 16:22
Forum: 03-Analytical/modelling capabilities
Topic: Solid and subdivided columns
Replies: 5
Views: 336

Re: Solid and subdivided columns

In looking over your model, it appears that you have used 'infrmFBPH' (force-based) elements for the columns and 'infrmDB' (displacement-based) elements for all beams. The 'infrmFBPH' element is an inelastic element with inelasticity distributed over a fixed length and the 'infrmDB' element is a fib...
by huffte
27 Dec 2019, 02:15
Forum: 03-Analytical/modelling capabilities
Topic: Solid and subdivided columns
Replies: 5
Views: 336

Re: Solid and subdivided columns

What type of element are you using? Note the descriptions and limitations of each element type before deciding which one is most appropriate for your situation. Displacement-based or force-based? Concentrated plasticity PH elements or fiber elements? I would suggest a through study of each element t...
by huffte
24 Dec 2019, 21:10
Forum: 04-Unexpected behaviour/errors
Topic: Extremely different results between modeling with infrmFB element and infrmDBPH element
Replies: 8
Views: 446

Re: Extremely different results between modeling with infrmFB element and infrmDBPH element

But if the only load other than self-weight is the lateral push load, it seems to me that the axial load variations would be quite large due to the overturning effect (large increase in compression on the 'leeward' column and large induced tension on the 'windward' column).
by huffte
17 Dec 2019, 16:42
Forum: 03-Analytical/modelling capabilities
Topic: Damping
Replies: 3
Views: 249

Re: Damping

The damping is indeed % of critical and the parameters, whether mass or stiffness or Rayleigh damping is specified,are determined automatically in accordance with equations found in the help system. Should the user wish to over-ride the computed values, manual input is possible.
by huffte
16 Dec 2019, 16:53
Forum: 02-Getting started with the modelling
Topic: the performance of building with infill wall
Replies: 8
Views: 1534

Re: the performance of building with infill wall

It's an interesting problem, maktrb. The first thing I observe in examination of the settings is that you are using initial-stiffness-based damping and have specified 4% damping at a period of 0.30 seconds. This means that the effective modal damping, as a percentage of critical, for the bare frame ...
by huffte
14 Dec 2019, 15:40
Forum: 02-Getting started with the modelling
Topic: the performance of building with infill wall
Replies: 8
Views: 1534

Re: the performance of building with infill wall

It is difficult to determine exactly what you are asking, maktrb. Your initial post stated that the bare frame fails. Your most recent post states that there is no problem with the bare frame. With infills, aren't the infills taking most of the load rather than the rigid frames? I assume the stiffne...
by huffte
12 Dec 2019, 14:55
Forum: 02-Getting started with the modelling
Topic: the performance of building with infill wall
Replies: 8
Views: 1534

Re: the performance of building with infill wall

Hi maktrb. I downloaded your archive and tried to extract the files therein. I received the message 'archive is unreadable'.

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